PowerShell:阅读PowerShell Transcript日志

我已经开始在我的个人资料中使用start-transcript来记录我通过shell做的所有事情.

它有助于回顾所做的更改以及更改的时间.我也开始将它作为文档的第一步.我一直在评论shell中完成的事情,以备将来参考.

事实证明,格式化是文本文档的格式,并不像shell那样容易阅读(主要是错误,冗长和警告颜色).

我想知道是否有人以这种方式使用Transcript功能并且有一个首选查看器或一个解析日志文件以生成某种文档的脚本?

编辑:我很想知道为什么这个问题被投了票……

最佳答案
我认为解析成绩单以创建准确的格式化文档非常困难.但是,您可以使用控制台主机API捕获(部分)屏幕缓冲区.

This Windows Powershell博客文章介绍了它的工作原理.

使用(修改过的)脚本(Get-ConsoleAsHtml.ps1)的一个简单方法是修改你的提示函数,这样每次提示函数都会保存缓冲区中尚未写入你的html脚本的所有行.叫做.第一个代码块是修改后的脚本的内容,第二个代码块显示了如何在配置文件中使用此脚本.

########################################################################################################### 
# Get-ConsoleAsHtml.ps1 
# 
# The script captures console screen buffer up to the current cursor position and returns it in HTML format.
# (Jon Z: Added a startline parameter)
# 
# Returns: UTF8-encoded string. 
# 
# Example: 
# 
# $htmlFileName = "$env:temp\ConsoleBuffer.html" 
# .\Get-ConsoleAsHtml 5 | out-file $htmlFileName -encoding UTF8 
# $null = [System.Diagnostics.Process]::Start("$htmlFileName") 
# 

param (
  $startline = 0
)

# Check the host name and exit if the host is not the Windows PowerShell console host. 
if ($host.Name -ne 'ConsoleHost') 
{ 
  write-host -ForegroundColor Red "This script runs only in the console host. You cannot run this script in $($host.Name)." 
  exit -1 
} 

# The Windows PowerShell console host redefines DarkYellow and DarkMagenta colors and uses them as defaults. 
# The redefined colors do not correspond to the color names used in HTML, so they need to be mapped to digital color codes. 
# 
function Normalize-HtmlColor ($color) 
{ 
  if ($color -eq "DarkYellow") { $color = "#eeedf0" } 
  if ($color -eq "DarkMagenta") { $color = "#012456" } 
  return $color 
} 

# Create an HTML span from text using the named console colors. 
# 
function Make-HtmlSpan ($text, $forecolor = "DarkYellow", $backcolor = "DarkMagenta") 
{ 
  $forecolor = Normalize-HtmlColor $forecolor 
  $backcolor = Normalize-HtmlColor $backcolor 

  # You can also add font-weight:bold tag here if you want a bold font in output. 
  return "<span style='font-family:Courier New;color:$forecolor;background:$backcolor'>$text</span>" 
} 

# Generate an HTML span and append it to HTML string builder 
# 
function Append-HtmlSpan 
{ 
  $spanText = $spanBuilder.ToString() 
  $spanHtml = Make-HtmlSpan $spanText $currentForegroundColor $currentBackgroundColor 
  $null = $htmlBuilder.Append($spanHtml) 
} 

# Append line break to HTML builder 
# 
function Append-HtmlBreak 
{ 
  $null = $htmlBuilder.Append("<br>") 
} 

# Initialize the HTML string builder. 
$htmlBuilder = new-object system.text.stringbuilder 
$null = $htmlBuilder.Append("<pre style='MARGIN: 0in 10pt 0in;line-height:normal';font-size:10pt>") 

# Grab the console screen buffer contents using the Host console API. 
$bufferWidth = $host.ui.rawui.BufferSize.Width 
$bufferHeight = $host.ui.rawui.CursorPosition.Y 
$rec = new-object System.Management.Automation.Host.Rectangle 0,0,($bufferWidth - 1),$bufferHeight 
$buffer = $host.ui.rawui.GetBufferContents($rec) 

# Iterate through the lines in the console buffer. 
for($i = $startline; $i -lt $bufferHeight; $i++) 
{ 
  $spanBuilder = new-object system.text.stringbuilder 

  # Track the colors to identify spans of text with the same formatting. 
  $currentForegroundColor = $buffer[$i, 0].Foregroundcolor 
  $currentBackgroundColor = $buffer[$i, 0].Backgroundcolor 

  for($j = 0; $j -lt $bufferWidth; $j++) 
  { 
    $cell = $buffer[$i,$j] 

    # If the colors change, generate an HTML span and append it to the HTML string builder. 
    if (($cell.ForegroundColor -ne $currentForegroundColor) -or ($cell.BackgroundColor -ne $currentBackgroundColor)) 
    { 
      Append-HtmlSpan 

      # Reset the span builder and colors. 
      $spanBuilder = new-object system.text.stringbuilder 
      $currentForegroundColor = $cell.Foregroundcolor 
      $currentBackgroundColor = $cell.Backgroundcolor 
    } 

    # Substitute characters which have special meaning in HTML. 
    switch ($cell.Character) 
    { 
      '>' { $htmlChar = '&gt;' } 
      '<' { $htmlChar = '&lt;' } 
      '&' { $htmlChar = '&amp;' } 
      default 
      { 
        $htmlChar = $cell.Character 
      } 
    } 

    $null = $spanBuilder.Append($htmlChar) 
  } 

  Append-HtmlSpan 
  Append-HtmlBreak 
} 

# Append HTML ending tag. 
$null = $htmlBuilder.Append("</pre>") 

return $htmlBuilder.ToString()

个人资料示例:

############################################################################################################ 
# Microsoft.PowerShell_profile.ps1 
# 

$docpath = [environment]::GetFolderPath([environment+SpecialFolder]::MyDocuments)
$transcript = "$($docpath)\PowerShell_transcript.$(get-date -f 'yyyyMMddHHmmss').html";
$global:lastloggedline = 0
function prompt { 
 &'D:\Scripts\Get-ConsoleAsHtml.ps1' $global:lastloggedline | out-file $transcript -append;
 $global:lastloggedline = $host.ui.rawui.cursorposition.Y
 "PS $pwd$('>' * ($nestedPromptLevel + 1)) "
}

转载注明原文:PowerShell:阅读PowerShell Transcript日志 - 代码日志